Boosting Oxygen Reduction Catalysis with Fe-N 4 Sites Decorated Porous Carbons toward Fuel Cells

Zhengkun Yang, Yu Wang, Mengzhao Zhu, Zhijun Li, Wenxing Chen, Weichen Wei, Tongwei Yuan, Yunteng Qu, Qian Xu, Changming Zhao, Xin Wang, Peng Li, Yafei Li*, Yuen Wu, Yadong Li

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

310 Citations (Scopus)

Abstract

It is highly desired but remains a great challenge to develop nonprecious metal single-atom catalysts to supersede the Pt-based material for oxygen reduction reaction (ORR). Herein, we report a porous nitrogen-doped carbon matrix catalyst with 3.5 wt % single Fe atoms (Fe SAs/N-C) through a versatile molecules-confined pyrolysis strategy. In 0.1 M KOH condition, the Fe SAs/N-C catalyst possesses a half-wave potential of 0.91 V vs RHE. In a more challenging acidic solution, Fe SAs/N-C catalyst also offers good ORR activity, comparable with the commercial Pt/C. Impressively, Fe SAs/N-C shows extremely high stability both in alkaline and acidic media. In addition, this Fe SAs/N-C-derived Zn-air battery and proton exchange membrane fuel cells (PEMFCs) exhibit high performance. This work opens an avenue for designing and preparing single-atom catalysts.

Original languageEnglish
Pages (from-to)2158-2163
Number of pages6
JournalACS Catalysis
Volume9
Issue number3
DOIs
Publication statusPublished - 1 Mar 2019

Keywords

  • Zn-air battery
  • electrocatalysis
  • fuel cells
  • oxygen reduction reaction
  • porous carbons
  • single-atom Fe

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